Watch



E. SEIGNOL.

WATCH.

APPLlCATION FILED mms. 1.921.

1,413,941. en ed pr. 25, 1922.

Inventor. Z5 l waa abg z 7 g UNITED STATES PATENT OFFICE.

I WATCH.

Specification of Letters Yatent.

Patented Apr. 25, 1922.

Application filed January 18, 1921. Serial No. 438,148.

To all whom it'may concern:

Be it known that I, EDOUARD SEIcNoL, citizen of the French Republic, residing at Neuilly-sunSeine, Department of the Seine, in France, have invented certain new and useful Improvements in Vatches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The mechanism of watches and horologioal movements is generally supported be tween superposed plates, connected together by pillars which are supported-at one end on one of the plates by a screwed or riveted head and are traversed at the opposite end by a pin. Braced or stayed sockets or collars are threaded on the pillars between the plates, which sockets or collars serve to support the escapement. The plate-block thus formed does not permit of an exact centering of the plates and lacks rigidity; it is therefore unsuitable for precise production on massewithout retouching or finishing.

These inconveniences are avoided by the method of construction forming the subject matter of the present invention which ensures perfect centering of the plates as well as exact marking or laying out of their relative positions.

The accompanying drawing shows by way of examplea constructional form of the invention.

Figure 1 is a longitudinal section through the axis of the watch case. V

Figure 2 is a plan of the mechanism.

The supporting frame-work of the watch mechanism is formed by a cylindrical casing 1, the outer or upright wall of which may be completely'closed or inthe form of an openwork casing. An openwork casing, however, has the advantage of decreasing the weight of the. whole arrangement and facilitates mounting and inspection of the mechanism.

If for example there are three plates, the casing is bored internally to three different diameters and the plates 2, 3 and 4: are themselves cut or worked to the corresponding diameters. The lowerplate 4: rests on the lugs or projections 5 of any suitable form and number and the plates 2 and 3 are supported on the projections or ridges formed ally on the projections or ridges of the cas- 7 ing by means of pins having their upper faces flush with the plates or by means of fixing screws.

The plates may as shown be provided with a number of holes suitably spaced apart and through whiehscrewed pins 6 are passed so that the lower screwed ends thereof engage in the lugs or projections 5 while the upper ends or heads of the pins bear on the upper face of the plate 2.

In order to obviate the individual fixing of each plate the maintenance of the plates on the lugs or projections is ensured by helical springs 9 coiled on the screwed pins 6, the said springs being of suitable power and length and compressed 6. The springs 9 coiled on the pins 6 could be replaced by asingle spring compressed between each pair of plates or by how springs, or by any other suitable resilient means.

horological mechanism which does not require a very high finish the casing can be cast and in this case the locking key or the locking keys instead of being removable or attachable could be cast with the casing as a whole.

The construction and arrangement hereinbefore described allows of very fine adjustment of the plates in the interior of the casing and ensures great rigidity to the block,

of mechanism as a whole, even if there exists aslight play of the screws 6 in the corresponding holes in the plates. Such is not the case of ordinary pillars as used in watch and clock construction which when not locked in position in the plates allow of relative movement between the said plates.

Claims.

1. A watch mechanism supporting frameby the screwed pins work, comprising a casing formed with dif ferent internal dian'ieters producing annular shoulders, discs or plates supported on said shoulders, and screws or pins to retain said plates in position on said shoulders.

2. A watch mechanism supporting framework, comprising a casing formed with different internal diameters producing annular shoulders, di cs or plates supported on said shoulders, screws or pins passing d0wnwardly through said plates to retain the same in position on said shoulders, and a key secured to the casing and engaging the edges of said disc to prevent any relative circumferential movement thereof.

EDOUARD SEIGNOL. 

